1--- 2c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al. 3SPDX-License-Identifier: curl 4Title: CURLINFO_LOCAL_PORT 5Section: 3 6Source: libcurl 7Protocol: 8 - TCP 9See-also: 10 - CURLINFO_LOCAL_IP (3) 11 - CURLINFO_PRIMARY_PORT (3) 12 - curl_easy_getinfo (3) 13 - curl_easy_setopt (3) 14--- 15 16# NAME 17 18CURLINFO_LOCAL_PORT - get the latest local port number 19 20# SYNOPSIS 21 22~~~c 23#include <curl/curl.h> 24 25CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_LOCAL_PORT, long *portp); 26~~~ 27 28# DESCRIPTION 29 30Pass a pointer to a long to receive the local port number of the most recent 31connection done with this **curl** handle. 32 33# EXAMPLE 34 35~~~c 36int main(void) 37{ 38 CURL *curl; 39 CURLcode res; 40 41 curl = curl_easy_init(); 42 if(curl) { 43 curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/"); 44 res = curl_easy_perform(curl); 45 46 if(CURLE_OK == res) { 47 long port; 48 res = curl_easy_getinfo(curl, CURLINFO_LOCAL_PORT, &port); 49 50 if(CURLE_OK == res) { 51 printf("We used local port: %ld\n", port); 52 } 53 } 54 curl_easy_cleanup(curl); 55 } 56 return 0; 57} 58~~~ 59 60# AVAILABILITY 61 62Added in 7.21.0 63 64# RETURN VALUE 65 66Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not. 67